Always enquire about the type of locks and security features being fitted with your double glazed windows all modern double-glazed replacement windows feature multi-point locking espag type locking, which will also “lock” partially open in a “night-vent” position. There’s also shoot bolt Locking or SAC bolt locks for additional security these systems may be available with an extra guarantee. SAC locking is now becoming standard with most high specification upvc, timber/wooden windows and doors.

Double glazed window security

Security for doors, differs from that of windows with regards to the locking features as there are different types such as higher specification locking systems. It’s worth asking if there is door lock upgrades available as in most cases for an extra cost you can have a substantially better door locking system or if you pay more again you can have a higher security composite door.

With PVC-u and timber windows you should opt for internally beaded – instead of an externally beaded window or door as clearly, if the beads holding in the glazing units are on the inside of the window or door frame it will be more difficult for a intruder to remove the glazing unit to enter Your home.

Certain windows should have an “easy escape” or “fire escape” option so whether there wood or upvc fire escape hinges may be fitted to ensure that the opening required for a person exiting in an emergency is adequate, this is regulated by Fensa and Certass.

Areas we serve

Swindon-based family run double glazing installers

With a head office in Swindon, a short trip from the motorway, we are ideally located to offer our services across Wiltshire, Reading, Bath, Bristol, Marlborough, Berkshire, Gloucestershire, Oxfordshire, and other surrounding locations.

Emerald provide and install home improvements in all materials – uPVC, aluminium and traditional timber. No matter what material you choose, you can be sure we’ll provide you consistent quality – our work is always finished to the highest standards, whether you’re installing 2 windows or 20!

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What our customers are saying

We pride ourselves on the hundreds of customer reviews that we have collected over our many years of trading. Why not read some of our testimonials yourself, and see how our customers have rated their experience with our service.

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Replacing patio door with a window

Emerald windows were brilliant. The patio door was removed and replaced with a window. All work was carried out from bricking up the outside to plastering the inside. Great work...

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Lesley B

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Local Family Friendly Company

We worried about choosing a window company. We looked at all the usual national firms but we preferred the feel of a smaller local family run business as the rep...

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Stephanie C

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Very Pleased

Very pleased with the whole process from Mark letting us see and touch the product in the showroom in Swindon (many don't!), to a transparent price breakdown, no "buy now...

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Casey Collins

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Highly Recommended

Highly recommend Emerald Windows and Doors; new Front and back doors fitted yesterday. Cannot praise Mark the Fitter enough, courteous, friendly and very helpful. Top job with attention to detail...

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Michelle Webb

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Emerald Windows – A Quality Product

Emerald windows have just installed a new composite front door to our property. We are very pleased with the product and the installers were polite, professional and have carried out...

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Richard K

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